Commit 20423f34 authored by Andreas Schildbach's avatar Andreas Schildbach
Browse files

This super-rough initial cut prints everything to the Android log.

It will connect to BT MAC 00:05:8B:44:02:02, retrieve the Generic Access service and try to
read and write the Device Name characteristic. Currently, reading succeeds while initiating
the write fails.

Sorry for the smelling code, this is my first Kotlin app (-:
parents
*.iml
.gradle
/local.properties
/.idea
/build
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
android {
compileSdkVersion 29
buildToolsVersion "29.0.1"
defaultConfig {
applicationId "com.example.card10companion"
minSdkVersion 21
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.core:core-ktx:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.2.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}
# Add project specific ProGuard rules here.
# You can control the set of applied configuration files using the
# proguardFiles setting in build.gradle.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html
# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}
# Uncomment this to preserve the line number information for
# debugging stack traces.
#-keepattributes SourceFile,LineNumberTable
# If you keep the line number information, uncomment this to
# hide the original source file name.
#-renamesourcefileattribute SourceFile
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.card10companion">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.BLUETOOTH"/>
</manifest>
\ No newline at end of file
package com.example.card10companion
import android.bluetooth.*
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import java.util.*
class MainActivity : AppCompatActivity() {
private val REMOTE_DEVICE_BLUETOOTH_MAC = "00:05:8B:44:02:02"
private val GENERIC_ACCESS_SERVICE_UUID = UUID.fromString("00001800-0000-1000-8000-00805f9b34fb")
private val DEVICE_NAME_CHARACTERISTIC_UUID = UUID.fromString("00002a00-0000-1000-8000-00805f9b34fb")
private var gatt: BluetoothGatt? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val remoteDevice = BluetoothAdapter.getDefaultAdapter().getRemoteDevice(REMOTE_DEVICE_BLUETOOTH_MAC)
val callback = object : BluetoothGattCallback() {
override fun onConnectionStateChange(gatt: BluetoothGatt, status: Int, newState: Int) {
System.out.println("===== onConnectionStateChange " + gatt + " / " + status + " / " + newState)
if (newState == BluetoothGatt.STATE_CONNECTED)
gatt.discoverServices()
}
override fun onServicesDiscovered(gatt: BluetoothGatt, status: Int) {
System.out.println("===== onServicesDiscovered " + gatt + " / " + status)
val services = gatt.getServices()
for (service in services) {
System.out.println(service.uuid.toString() + " / " + service.type + " / " + service.characteristics)
}
val genericAccessService = gatt.getService(GENERIC_ACCESS_SERVICE_UUID)
System.out.println("===================== " + genericAccessService)
for (c in genericAccessService.characteristics) {
System.out.println(c.uuid.toString() + " / " + c.value + " / " + c.writeType + " / " + c.properties)
}
val deviceNameCharacteristic = genericAccessService.getCharacteristic(DEVICE_NAME_CHARACTERISTIC_UUID)
val init = gatt.readCharacteristic(deviceNameCharacteristic)
if (!init)
System.out.println("Failed to initiate reading GATT attribute")
}
override fun onCharacteristicRead(
gatt: BluetoothGatt,
characteristic: BluetoothGattCharacteristic,
status: Int
) {
System.out.println("===== onCharacteristicRead " + characteristic.uuid.toString() + " / " + characteristic.getStringValue(0) + " / " + status)
characteristic.setValue("pink")
val init = gatt.writeCharacteristic(characteristic)
if (!init)
System.out.println("Failed to initiate writing GATT attribute")
}
override fun onCharacteristicWrite(
gatt: BluetoothGatt,
characteristic: BluetoothGattCharacteristic,
status: Int
) {
System.out.println("===== onCharacteristicWrite " + characteristic.uuid.toString() + " / " + characteristic.value + " / " + status)
}
}
gatt = remoteDevice.connectGatt(this, false, callback)
}
override fun onDestroy() {
gatt?.close();
super.onDestroy()
}
}
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xmlns:aapt="http://schemas.android.com/aapt"
android:width="108dp"
android:height="108dp"
android:viewportHeight="108"
android:viewportWidth="108">
<path
android:fillType="evenOdd"
android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
android:strokeColor="#00000000"
android:strokeWidth="1">
<aapt:attr name="android:fillColor">
<gradient
android:endX="78.5885"
android:endY="90.9159"
android:startX="48.7653"
android:startY="61.0927"
android:type="linear">
<item
android:color="#44000000"
android:offset="0.0"/>
<item
android:color="#00000000"
android:offset="1.0"/>
</gradient>
</aapt:attr>
</path>
<path
android:fillColor="#FFFFFF"
android:fillType="nonZero"
android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
android:strokeColor="#00000000"
android:strokeWidth="1"/>
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<?xml version="1.0" encoding="utf-8"?>
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xmlns:android="http://schemas.android.com/apk/res/android"
android:height="108dp"
android:width="108dp"
android:viewportHeight="108"
android:viewportWidth="108">
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android:pathData="M0,0h108v108h-108z"/>
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android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
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android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
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android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
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android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
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android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
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android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
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<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
<background android:drawable="@drawable/ic_launcher_background"/>
<foreground android:drawable="@drawable/ic_launcher_foreground"/>
</adaptive-icon>
\ No newline at end of file
<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
<background android:drawable="@drawable/ic_launcher_background"/>
<foreground android:drawable="@drawable/ic_launcher_foreground"/>
</adaptive-icon>
\ No newline at end of file
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